A262112 Number of (3+1)X(n+1) 0..2 arrays with each row nonprime and column prime, read as a base 3 number with top and left being the most significant digits.

54, 1968, 61256, 1845169, 50756609, 1290246169

Offset

1,1

Comments

Row 3 of A262109.

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=3
..1..0..0..1....1..2..1..0....0..1..1..0....0..0..1..1....1..0..1..0
..2..1..0..1....1..1..0..2....0..2..1..0....0..2..2..1....2..0..1..0
..2..1..2..1....1..2..1..1....1..2..2..1....1..1..0..2....2..1..0..2
..2..1..1..2....2..2..1..2....2..2..1..2....0..2..2..1....2..0..1..1

Crossrefs

Cf. A262109.

Sequence in context: A173188 A004363 A062144 * A076009 A358925 A003755

Adjacent sequences: A262109 A262110 A262111 * A262113 A262114 A262115

Keyword

nonn

Author

R. H. Hardin, Sep 11 2015

Status

approved